;;; Copyright (c) 2011-2012, James M. Lawrence. All rights reserved.
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;;
;;;     * Redistributions of source code must retain the above copyright
;;;       notice, this list of conditions and the following disclaimer.
;;;
;;;     * Redistributions in binary form must reproduce the above
;;;       copyright notice, this list of conditions and the following
;;;       disclaimer in the documentation and/or other materials provided
;;;       with the distribution.
;;;
;;;     * Neither the name of the project nor the names of its
;;;       contributors may be used to endorse or promote products derived
;;;       from this software without specific prior written permission.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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(in-package #:lparallel.spin-queue)

(eval-when (:compile-toplevel :load-toplevel :execute)
  (require 'sb-concurrency))

(deftype spin-queue () 'sb-concurrency:queue)

;; only used for testing
(defun peek-spin-queue (queue)
  (let ((list (sb-concurrency:list-queue-contents queue)))
    (if list
        (values (first list) t)
        (values nil nil))))

(alias-function make-spin-queue    sb-concurrency:make-queue)
(alias-function push-spin-queue    sb-concurrency:enqueue)
(alias-function pop-spin-queue     sb-concurrency:dequeue)
(alias-function spin-queue-count   sb-concurrency:queue-count)
(alias-function spin-queue-empty-p sb-concurrency:queue-empty-p)
